package com.kuang.config;

import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        Object userlogin = request.getSession().getAttribute("userlogin");
        if (userlogin!=null)
            return true;
        else {
            request.setAttribute("meg","操作失败，请先登录");
            request.getRequestDispatcher("/index.html").forward(request,response);
            return false;
        }
    }
}
